NSN 1240-01-321-2745 · NIIN 013212745 · Part number 6259609
Naval Sea Systems Command · FSC 1240 — Optical Sighting and Ranging Equipment · FSG 12 — Fire Control Equipment · CAGE 53711
Government record, cited
NSN 1240-01-321-2745 — this item is cataloged by the U.S. Government under National Stock Number 1240-01-321-2745. Manufacturer of record part number: 6259609.
Also searched as1240-01-321-2745 ·
1240013212745 ·
NIIN 013212745 ·
01-321-2745 ·
FSC 1240 Optical Sighting and Ranging Equipment · CAGE 53711 · 6259609
Nearby stock numbers← 1240-01-321-2734 Cover, Fire Control Instrument
·
1240-01-321-3235 Range Finder, Fire Control →
Features
Eyeshield,optical Instrument — FSC 1240
Attachment End Inside Diameter: 1.500 INCHES IN
Viewing End Inside Diameter: 0.718 INCHES IN
Material: RUBBER SYNTHETIC
Attachment Method: PRESS FIT
2 manufacturer part numbers on file
Manufacturer of record: Naval Sea Systems Command
Identification
NSN: 1240-01-321-2745
NIIN: 013212745
FSC: 1240 — Optical Sighting and Ranging Equipment
FSG: 12 — Fire Control Equipment
Primary part number: 6259609
Manufacturer: Naval Sea Systems Command
General Description
The Eyeshield,optical Instrument, cataloged under National Stock Number 1240-01-321-2745, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1240-01-321-2745
Primary Part Number
6259609
Item Name
Eyeshield,optical Instrument
FSC / FSG
1240 / 12 — Optical Sighting and Ranging Equipment
Seiler Instrument and Manufacturing Company, Incorporated (USA)
No interchangeability data on file.
Other items in FSC 1240 — Optical Sighting and Ranging Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1240-00-764-4734
SUNSHADE
1240-00-987-5071
1240-00-987-5071 · Item name not on file
1240-01-068-6676
HOLDER,OPTICAL ELEMENT
1240-01-082-8849
SIGHT,INFINITY
1240-01-090-0609
1240-01-090-0609 · Item name not on file
1240-01-102-4266
1240-01-102-4266 · Item name not on file
1240-01-110-9897
1240-01-110-9897 · Item name not on file
1240-01-361-6090
COLLIMATOR,INFINITY AIMING REFER
Frequently Asked Questions
What is NSN 1240-01-321-2745?
NSN 1240-01-321-2745 is a Eyeshield,optical Instrument, manufactured by Naval Sea Systems Command, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
What part numbers are listed for NSN 1240-01-321-2745?
NSN 1240-01-321-2745 has 2 manufacturer part numbers on file: 6259609 (Naval Sea Systems Command), 6259609 (Seiler Instrument and Manufacturing Company, Incorporated).
What are the specifications of 6259609?
Key specifications for 6259609: Attachment End Inside Diameter: 1.500 INCHES IN; Viewing End Inside Diameter: 0.718 INCHES IN; End Item Identification: MARK82MOD0 DIRECTOR,GUN AND GM; Material: RUBBER SYNTHETIC. 4 specifications are documented in the U.S. Government catalog.
Is NSN 1240-01-321-2745 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
What is the DEMIL code for NSN 1240-01-321-2745?
NSN 1240-01-321-2745 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.